[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 110.080294] audit: type=1800 audit(1556612729.126:25): pid=11900 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 110.104991] audit: type=1800 audit(1556612729.156:26): pid=11900 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 110.142209] audit: type=1800 audit(1556612729.176:27): pid=11900 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 124.648689] ================================================================== [ 124.656213] BUG: KMSAN: uninit-value in tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 124.663926] CPU: 1 PID: 12051 Comm: syz-executor433 Not tainted 5.1.0-rc7+ #3 [ 124.671218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 124.680584] Call Trace: [ 124.683181] dump_stack+0x173/0x1d0 [ 124.686817] kmsan_report+0x131/0x2a0 [ 124.690625] __msan_warning+0x7a/0xf0 [ 124.694461] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 124.699846] ? kmsan_get_shadow_origin_ptr+0x73/0x480 [ 124.705058] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 124.711219] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 124.716034] tipc_nl_compat_dumpit+0x6fc/0x8b0 [ 124.720634] tipc_nl_compat_recv+0x1bd8/0x27e0 [ 124.725236] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 124.730858] ? tipc_nametbl_stop+0x1000/0x1000 [ 124.735446] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 124.741595] ? tipc_netlink_compat_stop+0x40/0x40 [ 124.746447] genl_rcv_msg+0x185f/0x1a60 [ 124.750461] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 124.755840] netlink_rcv_skb+0x431/0x620 [ 124.759901] ? genl_unbind+0x390/0x390 [ 124.763801] genl_rcv+0x63/0x80 [ 124.767085] netlink_unicast+0xf3e/0x1020 [ 124.771251] netlink_sendmsg+0x127f/0x1300 [ 124.775510] ___sys_sendmsg+0xdb3/0x1220 [ 124.779575] ? netlink_getsockopt+0x1460/0x1460 [ 124.784271] ? __fget_light+0x60/0x750 [ 124.788154] ? __fdget+0x4e/0x60 [ 124.791520] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 124.796881] ? __fget_light+0x1fe/0x750 [ 124.800867] ? kmsan_get_shadow_origin_ptr+0x73/0x480 [ 124.806062] __se_sys_sendmsg+0x305/0x460 [ 124.810246] __x64_sys_sendmsg+0x4a/0x70 [ 124.814325] do_syscall_64+0xbc/0xf0 [ 124.818042] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 124.823231] RIP: 0033:0x444199 [ 124.826423] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 124.845327] RSP: 002b:00007fff4b60c688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 124.853055] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444199 [ 124.860327] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 124.867687] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 124.874986] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401e40 [ 124.882258] R13: 0000000000401ed0 R14: 0000000000000000 R15: 0000000000000000 [ 124.889541] [ 124.891176] Uninit was created at: [ 124.894731] kmsan_internal_poison_shadow+0x92/0x150 [ 124.899833] kmsan_kmalloc+0xa9/0x130 [ 124.903632] kmsan_slab_alloc+0xe/0x10 [ 124.907528] __kmalloc_node_track_caller+0xead/0x1000 [ 124.912712] __alloc_skb+0x309/0xa20 [ 124.916425] netlink_sendmsg+0xb82/0x1300 [ 124.920567] ___sys_sendmsg+0xdb3/0x1220 [ 124.924621] __se_sys_sendmsg+0x305/0x460 [ 124.928761] __x64_sys_sendmsg+0x4a/0x70 [ 124.932816] do_syscall_64+0xbc/0xf0 [ 124.936523] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 124.941697] ================================================================== [ 124.949057] Disabling lock debugging due to kernel taint [ 124.954503] Kernel panic - not syncing: panic_on_warn set ... [ 124.960385] CPU: 1 PID: 12051 Comm: syz-executor433 Tainted: G B 5.1.0-rc7+ #3 [ 124.969071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 124.978431] Call Trace: [ 124.981027] dump_stack+0x173/0x1d0 [ 124.984662] panic+0x3d1/0xb01 [ 124.987901] kmsan_report+0x29a/0x2a0 [ 124.991710] __msan_warning+0x7a/0xf0 [ 124.995518] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 125.000894] ? kmsan_get_shadow_origin_ptr+0x73/0x480 [ 125.006089] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 125.012234] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 125.017023] tipc_nl_compat_dumpit+0x6fc/0x8b0 [ 125.021621] tipc_nl_compat_recv+0x1bd8/0x27e0 [ 125.026222] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 125.031856] ? tipc_nametbl_stop+0x1000/0x1000 [ 125.036458] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 125.042699] ? tipc_netlink_compat_stop+0x40/0x40 [ 125.047541] genl_rcv_msg+0x185f/0x1a60 [ 125.051571] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 125.056953] netlink_rcv_skb+0x431/0x620 [ 125.061036] ? genl_unbind+0x390/0x390 [ 125.064940] genl_rcv+0x63/0x80 [ 125.068240] netlink_unicast+0xf3e/0x1020 [ 125.072409] netlink_sendmsg+0x127f/0x1300 [ 125.076678] ___sys_sendmsg+0xdb3/0x1220 [ 125.080745] ? netlink_getsockopt+0x1460/0x1460 [ 125.085446] ? __fget_light+0x60/0x750 [ 125.089330] ? __fdget+0x4e/0x60 [ 125.092701] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 125.098061] ? __fget_light+0x1fe/0x750 [ 125.102043] ? kmsan_get_shadow_origin_ptr+0x73/0x480 [ 125.107237] __se_sys_sendmsg+0x305/0x460 [ 125.111404] __x64_sys_sendmsg+0x4a/0x70 [ 125.115476] do_syscall_64+0xbc/0xf0 [ 125.119192] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 125.124376] RIP: 0033:0x444199 [ 125.127564] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 125.146467] RSP: 002b:00007fff4b60c688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 125.154176] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444199 [ 125.161467] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 125.168756] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 125.176042] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401e40 [ 125.183311] R13: 0000000000401ed0 R14: 0000000000000000 R15: 0000000000000000 [ 125.191611] Kernel Offset: disabled [ 125.195254] Rebooting in 86400 seconds..